As just a user, I would like to comment that most of such a feature would rarely be used by me, but I confess that bullet points might be useful. However, primary for me is an email client that works reliably (it does). I think one problem is that we are (most of us) used to Microsoft outlook and the like, which also has the ability to use Word as an editor.
The art is to know where to stop!
I have no idea whether android makes possible the use of an "external editor", but if it did, that may be a way to go, without kostya having to reinvent a "word-like" product.